Passive transport

Question 1

describe passive transport

Answer 1

Passive transport involves the exchange of substances without requiring metabolic energy from the cell

Question 2

describe diffusion

Answer 2

Diffusion is the net movement of particles from an area of higher concentration to an area of lower concentration (down their concentration gradient).

Question 3

describe Facilitated diffusion

Answer 3

the net movement of particles down their concentration gradient across a partially permeable cell membrane via carrier or channel proteins.

Question 4

Describe water potential

Answer 4

Water potential is a measure of the tendency of water molecules to move from one area to another area and describes the pressure created by these water molecules; the more dilute a solution, the higher (less negative) the water potential

Question 5

Describe osmosis

Answer 5

the net movement of water from an area of higher water potential to an area of lower water potential across a partially permeable membrane.

Question 6

What increases the rate of diffusion

Answer 6

diffusion can be increased by increasing the number of channel & carrier proteins, the surface area of the cell membrane, reducing the diffusion distance and creating a steeper concentration gradient.

Question 7

Facilitated diffusion diagram have a look

Answer 7

well done